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Allen-Bradley 1794-IR8

SKU: 1794-IR8-SOB-USA

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Condition SKU Stock Location and Best Delivery Date Price Purchase
Surplus Original Box 1794-IR8-SOB-USA 1 United States $742.33
1794-IR8-SOB-ASIA 27 Asia $770.78
The Allen-Bradley 1794-IR8 is a sophisticated Flex I/O analog input module designed specifically for Resistance Temperature Detector (RTD) applications, supporting temperature measurement across eight RTD channels. This module encompasses a wide range of RTD sensors, including options for Pt, Nickel, and Copper types, and offers a precision 16-bit resolution with remarkable accuracy—0.05% in normal mode and 0.01% in enhanced mode. Its advanced design includes an RTD excitation current of 718.36 µA, a maximum power dissipation of 3.0 W at 31.2 V DC, and rapid system throughput, making it an ideal solution for precise temperature monitoring and control in industrial settings.

Technical specifications for 1794-IR8

Manufacturer Rockwell Automation
Resolution 16 bits across 435 ohms
Brand Allen-Bradley
Product Description: Flex IO 8-Channel RTD Input Module
Number of Inputs: 8
Terminal base: 1794-TB2, 1794-TB3 and 1794-TB3T
Sensors supported: 100 ? Pt ? = 0.00385 Euro (-200…+870 °C) 100 ? Pt ? = 0.003916 U.S. (-200…+630 °C) 200 ? Pt ? = 0.00385 Euro (- 200…+630 °C) 500 ? Pt ? = 0.00385 U.S. (-200…+630 °C) 100 ? Nickel ? = 0.00618 (-60…+250 °C) 120 ? Nickel ? = 0.00672 (-60…+250 °C) 200 ? Nickel ? = 0.00618 (-60…+250 °C) 500 ? Nickel ? = 0.00618 (-60…+250 °C) 10 ? Copper ? = 0.00427 (- 200…+260 °C).
RTD Excitation Current: 718.36?A
Accuracy: Without calibration, at low humidity: Normal mode: 0.05% full scale (max) Enh. mode: 0.01% full scale (typical)
Data Format: 16-bit 2's complement or offset binary (unipolar)
System Throughput: Normal Mode: Programmable from 28ms/channel to 325ms/channel 325ms (1 channel scanned) 2.6s (8 channels scanned) - default Enhanced Mode: Programmable from 56ms/channel to 650ms/channel 650ms (1 channel scanned) - default 2.925s (8 channels scanned)
Mounting: DIN Rail
Wire Size: Determined by installed terminal base
Operating Temperature: 0 to 55 C (32 to 131 F)
Storage Temperature: –40…85 °C (–40…185 °F)
Vibration: 5g @ 10 to 500 Hz
Operating Shock: 30 g
Part Number/Catalog No. 1794-IR8
Product Type Flex I/O RTD Module
Inputs 8 Channels
Nominal Input Ranges 1 to 433 ohms
Isolation Voltage 850 Volts DC
Normal Mode Noise Rejection -60 DB at 60 Hertz
Channel Bandwidth 0 to 2.62 Hertz
Normal Mode System Throughput 325 milliseconds
Flexbus Current 20mA
Power Dissipation 3 Watts at 31.2 Volts DC maximum
Thermal Dissipation 10.2 BTU/hour at 31.2 Volts DC maximum
UPC 10612598137821
UNSPSC 32151602
Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
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